Probably a stupid question, but what determines how much to give for a fluid bolus? Is there a way to figure it out or something? I was on the L&D unit last week and my patient received an epidural. I know that epidurals can cause your blood pressure to drop which is why they usually give a bolus of fluid, but my nurse set the rate of LR to infuse at 1900mL/hr....that thing was going so fast! It was running for awhile, too...I would say a good 20-25 minutes.